The Environmental Protection Agency filed a brief August 20 in the U.S. Court of Appeals for the District of Columbia Circuit saying that it carefully considered Energy Information Administration data and its own analyses of cellulosic biofuel production capabilities when it established volume requirements for the 2012 renewable fuel standard. The agency also defended its decision to not reduce the overall volume of required advanced biofuels even as it lowered the standard for cellulosic biofuels. The American Petroleum Institute sued the agency in March, contending that the cellulosic standards are unachievable.